我有一个 Rails 应用程序，它使用omniauth 通过 Facebook 对访问者进行身份验证。
当您向 Facebook 注册应用程序时，您必须注册一个回调 URL，一旦完成身份验证过程，他们将重定向到该回调 URL。
由于我的生产站点托管在与我的开发环境不同的服务器上，因此我需要向 Facebook 注册 2 个不同的 URL。我通过注册两个应用程序（一个实时版本和一个开发版本）来完成此操作。
当然，现在我有两个 app_id 和两个 app_secrets，我的 Rails 应用程序需要使用它们。
如何将 OmniAuth 设置为在开发环境中使用一组密钥，在生产环境中使用另一组密钥？
我尝试在 /config/environments 目录中设置密钥，如下所示：
# development.rb
SampleApp::Application.configure do
config.omniauth_keys.facebook.app_id = "32423423"
config.omniauth_keys.facebook.api_key = "324234324234324"
config.omniauth_keys.facebook.app_secret = "242343424234324324234324"
end
# production.rb
SampleApp::Application.configure do
config.omniauth_keys.facebook.app_id = "7657566"
config.omniauth_keys.facebook.api_key = "7756765765756757"
config.omniauth_keys.facebook.app_secret = "65756767567567567757"
end
然后在 /config/initializers/omniauth.rb 中
Rails.application.config.middleware.use OmniAuth::Builder do
keys = SampleApp::Application.config.omniauth_keys
# ==> OmniAuth Provider Credentials
# APP_ID SECRET_ID
provider :facebook, keys.facebook.app_id, keys.facebook.app_secret
end
但我得到
`method_missing': undefined method `omniauth_keys'
当我尝试启动开发服务器时，我猜测是因为omniauth.rb是在/emvironments/*之前加载的？
我该如何设置？
Edit:这是更详细的错误消息
=> Booting WEBrick
=> Rails 3.0.4 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/railtie/configuration.rb:77:in `method_missing': undefined method `omniauth_keys' for #<Rails::Application::Configuration:0xadaa69c> (NoMethodError)
from /home/david/sites/sample_app/config/environments/development.rb:32:in `block in <top (required)>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/application.rb:47:in `class_eval'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/application.rb:47:in `configure'
from /home/david/sites/sample_app/config/environments/development.rb:1:in `<top (required)>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:239:in `require'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:239:in `block in require'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:225:in `block in load_dependency'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:596:in `new_constants_in'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:225:in `load_dependency'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:239:in `require'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/application/bootstrap.rb:11:in `block in <module:Bootstrap>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/initializable.rb:25:in `instance_exec'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/initializable.rb:25:in `run'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/initializable.rb:50:in `block in run_initializers'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/initializable.rb:49:in `each'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/initializable.rb:49:in `run_initializers'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/application.rb:134:in `initialize!'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/application.rb:77:in `method_missing'
from /home/david/sites/sample_app/config/environment.rb:5:in `<top (required)>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:239:in `require'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:239:in `block in require'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:225:in `block in load_dependency'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:596:in `new_constants_in'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:225:in `load_dependency'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/activesupport-3.0.4/lib/active_support/dependencies.rb:239:in `require'
from /home/david/sites/sample_app/config.ru:3:in `block in <main>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/builder.rb:46:in `instance_eval'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/builder.rb:46:in `initialize'
from /home/david/sites/sample_app/config.ru:1:in `new'
from /home/david/sites/sample_app/config.ru:1:in `<main>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/builder.rb:35:in `eval'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/builder.rb:35:in `parse_file'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/server.rb:162:in `app'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/server.rb:248:in `wrapped_app'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/rack-1.2.1/lib/rack/server.rb:213:in `start'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/commands/server.rb:65:in `start'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/commands.rb:30:in `block in <top (required)>'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/commands.rb:27:in `tap'
from /home/david/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.4/lib/rails/commands.rb:27:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
